Container pen



FIG. 1 is an isometric view of a contain pen showing our new design;

FIG. 2 is a top plan view of the container pen;

FIG. 3 is a side elevational view of the container pen; all side views of the container pen being identical thereto;

FIG. 4 is a bottom plan view of the container pen; and,

FIG. 5 is a side elevational view in an exploded condition, all other sides being identical thereto. 

The ornamental design for a container pen, as shown and described. 